Fix several cases where lex_integer() or lex_number() could assert-fail.
[pspp] / lib / linreg /
drwxr-xr-x   ..
-rw-r--r-- 21 .gitignore
-rw-r--r-- 201 automake.mk
-rw-r--r-- 4051 sweep.c
-rw-r--r-- 2105 sweep.h